class_docstr: Allow chatbots to be trained with the data from the Ubuntu Dialog Corpus.
docstr: Check if the data file is already extracted.
docstr_tok: ["Check","if","the","data","file","is","already","extracted","."]
code: def is_extracted(self, file_path):
      """
      Check if the data file is already extracted.
      """
  
      if os.path.isdir(file_path):
          self.chatbot.logger.info("File is already extracted")
          return True
      return False
  
imports: import os
  import sys
  import csv
  import time
  from dateutil import parser
  from chatterbot.conversation import Statement
  from chatterbot.tagging import PosLemmaTagger
  from chatterbot import utils
label_desc: Use image node_id 3 for calling the UbuntuCorpusTrainer obj's underlying member method code with example usage: obj.is_extracted(file_path) and returns: False, True